Starbucks and other employers in California must pay workers for minutes they routinely spend off the clock on tasks such as locking up or setting the store alarm, the state Supreme Court ruled Thursday.

Facebook faced a day of reckoning as its shares plunged Thursday in the company's worst trading day since going public in 2012. It was among the biggest one-day losses of market value in U.S. stock market history.

The Trump administration on Tuesday brought cases against China, the European Union, Canada, Mexico and Turkey at the World Trade Organization for retaliating against American tariffs on imported steel and aluminum.